Siemens 7SJ85 - Thermal Overload Protection, User-Defined Characteristic Curve; Overview of Functions; Structure of the Function

Thermal Overload Protection, User-Defined Characteristic Curve
Overview of Functions
The Thermal overload protection, user-defined characteristic curve function (ANSI 49) is used to:
•
Protect the equipment (motors, generators, and transformers) against thermal overloads
•
Realize a manufacturer specific overload characteristic curve for specific equipment, for example, shunt
reactors
•
Monitor the thermal state of motors, generators, and transformers
Structure of the Function
The Thermal overload protection, user-defined characteristic curve function is used in protection function
groups with 3-phase current measurement.
The Thermal overload protection, user-defined characteristic curve function is steplessly preconfigured.
[dw_TOLP_UserCurveStr, 1, en_US]
Figure 6-167 Structure/Embedding of the Function
6.20
6.20.1
6.20.2
Protection and Automation Functions
6.20 Thermal Overload Protection, User-Defined Characteristic Curve
SIPROTEC 5, Overcurrent Protection, Manual 665
C53000-G5040-C017-8, Edition 07.2017